Abstract
Mixed system of (1-x)Na0.5Bi0.5TiO3+(x)SrTiO3 (NBT-ST) where x=0.075, 0.125, 0.150, 0.200 ferroelectric ceramic materials are synthesized using modified pechini method. These optimized compositions are used for study of polarization versus electric field (P-E) loops. The ferroelectric response of the samples is investigated as a function of temperature. Remnant polarization of exhibited loops observed to decrease with increasing temperature. PE data is used to estimate the electrocaloric properties. Maximum entropy change, full width at half maximum, relative cooling power is obtained from theoretical calculations.
Highlights
Perovskite ferroelectric materials exhibit electrocaloric effect (ECE) which is associated with entropy change in the material during application or removal of field
ECE is effectively observed in ferroelectric materials which are capable of generating large polarization change and show large entropy variation associated with the polarization change [12]
NBT-ST samples synthesize by sol gel and solid-state route was taken to observe the polarization and entropy variations
Summary
Mixed system of (1-x)Na0.5Bi0.5TiO3+(x)SrTiO3 (NBT-ST) where x=0.075, 0.125, 0.150, 0.200 ferroelectric ceramic materials are synthesized using modified pechini method. These optimized compositions are used for study of polarization versus electric field (P-E) loops. The ferroelectric response of the samples is investigated as a function of temperature. Remnant polarization of exhibited loops observed to decrease with increasing temperature. PE data is used to estimate the electrocaloric properties. Full width at half maximum, relative cooling power is obtained from theoretical calculations
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
